accuracy

In this paper, the method of determining the stability of the voltage-to-current converter (VCC) with complex load, which is built on the DC amplifier with a deep negative feedback (NFB) by current. The feedback signal is formed on precise resistor, which is connected in series with an inductive load. The deep feedback and complex load can cause a violation of the stability of the VCC across the whole dynamic range of operation.

This paper presents a method of determining the necessary sensitivity for photoelectronic transducer (PET) in scanning television optical microscope (STOM), which is used for biological microobject studying. High resolution cathode ray tube is used in the STOM for test microobject illumination. On the screen of this tube a scanning raster is being formed. This raster allows you to create an image of microobjects, whose resolution exceeds 4000x4000 elements.

Consider the impact of technological regimes polishing surface finish and establish the optimal conditions for grinding and abrasive wheels revision in view of their period of stability.

The paper deals with the analytic model suitable to evaluate the errors impact on the output surface accuracy in the machining process using the integral self-adjusting machine tool equipment. This model is based on the variation simulation method of machines precision calculation. The impact evaluation of accessories errors of force action from the cutting process as well as clamping is developed. This evaluation substantially considers the output accuracy of the machined cylindrical surfaces of the console fixed parts.

The possibility of application of glass capillary tubes (CTs) as sensors of small and micro flowrates of gases was justified. The accuracy of a number of CTs flowrate equations was analyzed on the basis of experimental studies of CTs flowrate characteristics. It was shown that CTs can be applied as primary devices of small and micro flowrates of gases without individual calibration.

The analysis of influence the errors of exterior orientation elements on the coordinates when digital external survey.

The results of studies to assess the accuracy of determining the area of land in different ways.

Possibility of the use of GPS-observations with the partly closed horizon is investigated. Accuracy of baseline vector determination in dependence of elevation mask and period of satellite observations is analyzed.

The aim. The aim of the work is the research of the possibilities of using the real time in geodetic satellite measurements, the support system of Ground-Based Augmentation System (GBAS) type [Prasad and Ruggieri 2005, Rife and Phelts 2009, Dawidowicz and Krzan 2014]. The paper analyzes the results and evaluates the actual accuracy of the real field measurements, depending on the selected solution.